Rail-anchor.



P. W. MOORE.

RAIL ANCHOR.

APPLICATION FILED FEB, 24, 1914 Patented Nov. 10, 1914.

2 SHEETS-SHEET 1.

' W/TZVESSES P. W. MOORE. RAIL ANGHOR.

APPLICATION FILED FEB. 24, 1914.

1,1 1 6,?22. Patented None, 1914.

2 SHBBTSSHEET 2, Fig.5.

WITNESSES UNITED STATES PATENT OFFICE.

PHILIP W. MOORE, OFEVANSTON, ILLINOIS, ASSIGNOR TO THE P & M COMPANY, OF

CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

RAIL-ANCHOR.

Specification of Letters Patent.

Patented Nov. 10, 1914.

Application filed February 24, 1914. Serial No. 820,596.

To all whom it may concern:

Be it known that I, Pmmr W. Moons, a

citizen of the United States, residin at Evanston, in the county of Cook and tate of Illinois. have invented certain new and useful Improvements in Rail-Anchors, of which the following is a specification.

My invention relates to rail anchors or anticreeping devices and particularly to devices of the wedge type.

A rail anchor of this type consists ordinarilv of a pair of rail gripping members whic i have a wedging engagement one with the other, one of which" members bears against a cross tie and the other stands out of contact with said tie so that a forward creep or lon itudinal movement of the rail, carrying with it the free member, produces a closer grip of the device on the rail base whereby such forward creeping tendency is self-checked.

My invention has for one of its principal objects to provide a novel and improved rail anchor of the type above mentioned in which the co-engaging parts or jaw members are provided with two pairs of coengag'ing wedge faces which become eifective when the free member is moved in the direction of the tie, one pair of wed es operating to draw the jaws toward eac other so as to increase the lateral grip of the de vice on the rail, the other pair being designed to simultaneously increase the vertical pressure or clamping stress between the parts of the device and the 11 per and lower surfaces of the base flan e o? the rail.

A further object of tie invention is to provide in a device of the type described, an improved construction and arran ement of the parts whereby, if the anchor ecomes a trifle loose on the rail, on account of vibration, unc ual expansion and contraction as between t e rail and the anchor due to temperature changes or other causes, the parts of the anchor remain engaged with each other, this engagement obviating the'danger of the parts of the anchor falling from the rail base when they become loosened.

The invention has for further objects such other improved constructions, arrangements and devices relating to rail anchors as will be hereinafter described and claimed.

-'The invention is illustrated, in a preferred embodiment, in the accompanying drawings, wherein- Figure 1 is a side elevation of the device shown as applied to a rail, the latter being shown in section; Fig. 2, a plan view of the device shown in Fig. 1; Fig. 3, a lon itudinal sectional view on line 33 of Fig. 1 Figs. 4 and 5, views, in perspective, of the two members constituting the anchor, and Fig. 6, a detail sectional plan taken on line 6-6 of Fig. 1, this figure showing particularly the wedging engagement operating to draw the jaw members toward each other.

Like characters of reference designate like parts in the several figures of the drawings.

Referring to the drawings, A designates a rail and one of the cross ties supporting the same.

The anchor, in the preferred form shown, consists of two jaw members C and D. The jaw member G into the jaw of which the base flange of the rail fits snugly with a binding engagement is formed with an arm or plate E adapted to extend across the under surface of the base flange of rail A to a point beyond the middle of the same terminating preferably, though not necessarily, within the opposite edge of said base flange. It is formed with a downwardly projecting wed in rib or web F.

T e jaw member D is formed with a slot G adapted to receive the edge of the base flange of rail A and with a slot H into which the rib F fits. The slot H and the rib F are oblique with respect to the longitudinal axis of the rail so that when the member D is moved toward the tie B its jaw also up roaches the jaw of the member C. Prefers ly, although not necessarily. the rib F and slot H are slightly dovetailed, that is, their coengaging wedge surfaces f, it have a slope from top to bottom toward the center of the anchor. One of the jaw members, preferably the jaw member C, is formed with a strut or tie abutting flange J. In order to produce a vertical bind or clamp of the device upon the rail, as well as the lateral clam just described, the bottom surface h of t 1e slot H, and the corres )ondiug surface f of the rib have a slope ownwardly toward the tie. Thus the tendency of the rail to creep forward is checked by the closer gripboth horizontal and verticreeping tendency induces.

calof the device on the.- rail which such of a device of th s sort depends largely upon the capacity of the free member-member D in this caseto move toward the tie when the rail starts to creep. If the friction between the free member and the fixed membar is greater than the friction between the free member and the rail obviously this necessary movement of the free member will not take place.

In the device shown I have provided for a close frictional grip of the free member on the rail base by forming said member with a slot, the slot G, into which the edge of the rail base is, wedged Thus the free member completely surrounds or embraces the edge of the rail base, presenting three surfaces of contact therewith, the friction between which and the co-engaged rail surfaces is amply suiiicient to overcome the friction between the surfaces 7' h, f h, The arm E on member C is relatively long in comparison with the projecting portion of the member D which extends under and engages the extremity of said arm. This ar rangement effectually prevents the device from dropping from the rail in case it becomes loose through vibration, difference in contraction and expansion between the anchor and the rail due to temperature changes, or other causes The short jaw member D extends .under and holds up the end of the other member C so that the parts, even though loose, are in proper position to resume their operative hold upon the mil with the change in temperature orwhenthe creeping movement of the rail has moved the free member forward far enough to take up the looseness. It will be seen that the wedging elngagement between the two members takes; place below, or very nearly below, the overlapping portion of jaw member D. The overlapping portion of the aw,

therefore, takes up the wedging stresses which might otherwise break out or bend the edge of the rail.

While I have described my invention in certain preferred embodiments, some modification in the form and construction of the arts might be made. without departure from the principles of the invention. Therefore I- do not wish to be understood as limiting the invention to the precise constructions and-arrangements shown and described except so far as the same are made specifically limitations in certain of the claims hereof.

I claim:

1. In a rail anchor, the combination with a. jaw member engaging one edge of the rail base and formed with an arm extending under the rail base-beyond the middle thereof having a downwardly projecting rib; of a jaw member which engages the opposite The efficiency edge of the rail base and is formed with a slot to receive said rib; said members being formed with co-engaging wedge faces and providing together means having a binding engagement with the top and bottom of the rail base at both edges thereof, and one of them being provided with a tie-abutting portion; of a jaw member which engages the opposite edge of the rail base and is formed with a slot to receive said rib; said members being formed with cdengaging wedge faces and providing together means havin a binding engagement with the top and ottom of the rail base at both edges thereof.

3. In a rail anchor, the combination with a jaw member adapted to engage one edge of the base flange of a rail and formed with an arm extending under the rail to a point adjacentthe other edge of said base flange and provided at its extremity with a downwardly projecting rib, of a jaw member formed with a recess adapted to receive the rib on said arm with a recess into which. the adjacent edge of said base flange fits with a bearing at the top and bottom, one of said members being provided with a tie-abutting an arm extending under the rail to. a point adjacent the other edge of said base flange and provided at its extremity with av downwardly projecting rib, of a jaw member formed with a recess adapted to receive the rib on said arm and With a recess into which the adjacent edge of said base flange fits with a bearing at the top and bottom, said arm provided with a'tie-abutting flange.

3. A rail anchor comprising a pair of jaw members adapted to engage opposite edges of the base flange of a rail, one of said members provided with a relatively long extension lying under said rail base and the other having a short extension which projects under said first named extension, said members being formed with (ac-engaging wedge faces and providing together a flat bearing for the base flange of the rail as wide as such flange and also jaws which engage the upper surfaces of said base flange above said flat bearing, one of said 'members being provided with a tie-abutting portion.

6. A rail anchor comprising a pair of jaw members adapted to engage opposite edges of the base flange of a rail, one of said members provided with a relatively long examps-2 tension iying under said rail base and formed with a tie-abutting flange, the other having. a short extension which projects undcr said first named extension, said members being formed with co-engaging wedge faces and providing together a flat bearing for the base flange of the rail as wide as such flange and also jaws which. engage the upper surfaces of said base flange above said flat bearing.

7. A .rail anchor comprising a pair of jaw members adapted to engage opposite edges of the base flange of a rail and pro vided with extensions lying under said rail base, said extensions being formed with two ppirs of co-engaging wedgefaces, one of which operates to produce a horizontai and the other a vertical clamping of the device on the rail, one of said members being formed with a tie-abntting flange.

"8. A rail anchor comprising a pair of jawmembers adapted to engage opposite edges of the base flange of a rail and provided with extensions lying under said rail base, said extensions being formed under the rail and at one side thereof with two pairs of (fa-engaging wedge faces, one of which operates to produce a horizontal and the other a vertical clamping of the device on the rail, one of said members being formed with a tie-abutting flange.

9. A rail anchor comprising a pair of jaw members adapted to engage opposite edges of the base flange of a rail, one of said members having an arm extending under said base flange to a point adjacent the opposite edge thereof and terminating in adownwardly extending rib, the other member being formed with a slot to receive said rib, said rib and slot being constructed so as to provide co-engaging wedge faces. and providing together a flat bearing for the base flange of the rail as wide as such flange and also jaws which engage the upper surfaces of said base flange above said flat bearing.

10. A rail anchor comprising a pair of jaw members adapted to engage opposite edges of a base flange of a rail, one of said members having an arm extending under said base flange to a point adjacent the 0pposite edge thereof and terminating in a downwardly extending rib, the other memher being formed with a slot to receive said rib, said rib and slot being constructed so as to provide two pairs of co-engaging wedge faces, one operating to produce a horizontal and the other a vertical grip of the device on the rail. V

11. A rail anchor comprising a pair of jaw members adapted to engage opposite edges of the base flange of a rail, one of said members having an arm extending under said base flange to a point adjacent the opposite edge thereof and terminating in a downwardly extending dovetailed rib, the other member being formed with a dovetailed slot to receive said rib, said rib and slot bein constructed so as to provide coengaging wedge faces.

12. A rail anchor comprising a pair of jaw members adapted to engage opposite edges of the base flange of a rail, one of said members having an arm extending under said base flange toe point adjacent the opposite edge thereof and terminating in a downwardly extending dovetailed rib, the

other member being formed with a dovetailed slot to receive said rib, sald rib and slot being constructed so as to provide two pairs of co-engaging wedge faces, one operating to produce a horizontal and the other a vertical grip between the device and said rail base. I

13. In arail anchor, the combination with a jaw member comprising a jaw adapted to engage one edge of the base flange of a rail and formed with an arm extending under said base flange to a point between the middle of the same and its opposite edge and terminating in a downwardly extending rib, said arm being provided with a. tie-abutting flange, of a aW member formed with a slot adapted to receive said rib and with a slot to receive the adjacent edge of said rail base, said rib and first named slot being formed so as to provide two pairs of co-engaging wedge faces, one of which operates to produce a horizontal and the other a vertical grip of the device on said rail.

PHILIP W. MOORE Witnesses: Y

Y L. A. FALlfl-IXHERG,

J. B. Lxuomo. 

